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Search Data
- Select Search Constraints and Output, then click the Search button.
- Leave an Advanced Option field empty to search over the full range.
- Choose TAR to download all the spectra, or HTML/Text/VOTable to view a summary table with links.
  
Dataset
Telescope & Instrument
Telescope & Instrument
Select one or more telescope+instrument combinations.
MMT 6.5m + Hectospec
Search Constraints
Object Name (SIMBAD)  
or  Coordinates (J2000)
Object Name (SIMBAD)  or  Coordinates (J2000)
SIMBAD-resolvable object name, or search position in RA and Dec (decimal degrees or sexagesimal formats [hh mm ss  dd mm ss])
Examples
M81
148.888 69.065
9 55 33.2  69 03 55
Search Radius (arcmin)
Search Radius (arcmin)
Search radius (arcmin) around given point coordinates
Examples
1.0
or
Input File Upload
Input File Upload
Upload a list of target positions. This expects a text file with three floats per line: RA (deg), Dec (deg), & search radius (arcsec).
Examples
148.888   69.065   60   (line 1)
10.68471   41.268750   90   (line 2)

Advanced Options
Advanced Options
Leave the Advanced Option empty to select the full range.

Observation Dates
Observation date (midpoint of exposure) in the format of YYYY-MM-DD. Operators <, >, +/- and .. (between) can be used to select a range.
Examples
2006-05-04 -- on May 5, 2006
>2012-02-01 -- later than Feb. 1, 2012
2007-11-15 +/- 5 -- 5 days around Nov. 15, 2007
2006-10-01 .. 2007-12-01 -- between Oct. 1, 2006 and Dec. 1, 2007

Redshift z
Redshift z of target object. Operators <, >, +/- and .. (between) can be used to select a range.
Examples
0.2 or =0.2 -- select only values exactly 0.2
!=0.2 -- select only values different from 0.2
<0.15 -- select values samller than 0.15
>=0.2 -- select values greater or equal to 0.2
0.2 +/- 0.05 -- select values between 0.15 and 0.25 inclusive
0.13 .. 0.18 -- select values between 0.13 and 0.18 inclusive

SNR (Signal-to-Noise Ratio)
Per-pixel S/N averaged over 100 pixels at the center of the spectrum. Operators <, >, +/- and .. (between) can be used to select a range.
Examples
100 or =100 -- select only values exactly 100
!=100 -- select only values different from 100
<150 -- select values samller than 150
>=200 -- select values greater or equal to 200
200 +/- 50 -- select values between 150 and 250 inclusive
130 .. 180 -- select values between 130 and 180 inclusive



Output
Download or Summary Table
Download or Summary Table
Select one of the file formats in the list.
Examples
"tar" (to download the spectra)
"HTML"
Output Table
Output Table
Sort the result in ascending order by the chosen keyword up to the number of spectra you specified.
Examples
Sort by "Date Obs."
Limited to "5000" items
Sort by
Limit to items